pipelinen.
英 'paɪplaɪn | 美 'paɪplaɪn
中文n. 管道；输油管；传递途径
词根词源
pipeline (n.)1859, "continuous line of pipes," from pipe (n.1) + line (n.). Figurative sense of "channel of communication" is from 1921; surfer slang meaning "hollow part of a large wave" is attested by 1963.
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